Question

if vector a=5i-2j+3k and B=-i+k then find vector a.b?​

Answer 1

Answer:

-2

Step-by-step explanation:

dot product of a and b.

a.b=(5i-2j+3k).(-i+k)

=5i-2j+3k(-i+0j+k)

=5(-1)-2(0)+3(1)

=-5+0+3

=-5+3

a.b=-2

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